Silverado weird sound

[Silverado_Dude]

Not that familiar with this sound. But when you rev the engine, or you are taking off fast. The engine makes like a high pitch compression noise. Ive heard them in other vehicles but mine is louder. What do you think it is, or what to do about it?

[j cAT]

Originally Posted by Silverado_Dude

Not that familiar with this sound. But when you rev the engine, or you are taking off fast. The engine makes like a high pitch compression noise. Ive heard them in other vehicles but mine is louder. What do you think it is, or what to do about it?

what engine/year ???
this could be the exhaust manifold bolts,,they are week and are known to break,rust ..

[Silverado_Dude]

2000 5.3L....its coming from somewhere close to the top of the engine near the firewall....the noise kinda sounds like a faster higher pressured version...of when you check your tire pressure and some leaks out

[j cAT]

Originally Posted by Silverado_Dude

2000 5.3L....its coming from somewhere close to the top of the engine near the firewall....the noise kinda sounds like a faster higher pressured version...of when you check your tire pressure and some leaks out

did you check the exhaust manifold bolts?

[Silverado_Dude]

nope...i really dont know where they are either lol
Ive done alot to my truck but im still learning too

[j cAT]

Originally Posted by Silverado_Dude

nope...i really dont know where they are either lol
Ive done alot to my truck but im still learning too

so you don't know what the exhaust manifold is ?
this is where the exhaust exits the engine,,it should look rusty,,with bolts that are rusted mounted on each side of the engine...get's hot quickly...

[Silverado_Dude]

headers? lol

[j cAT]

Originally Posted by Silverado_Dude

headers? lol

does this vehicle have the OEM exhaust, or some aftermarket equiptment...???

in any case this sounds like your problem..bring to an exhaust repair garage..

[Silverado_Dude]

all i have is a cat-back with Flowmaster 40

[j cAT]

Originally Posted by Silverado_Dude

all i have is a cat-back with Flowmaster 40

was it the headers leaking ?

[masapell]

What about the PCV valve, back of engine, near the firewall, on top of the drivers side valve cover. Is it in the hole correctly? Just a thought.